Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 316 · 40 questions

Engineer's tip (Test fairly, record honestly): Prototype = an early model made to test an idea. Fair test: change one thing, keep the rest the same, measure and record every result. Mean of three tests = (first + second + third) ÷ 3.

1. 1.🧪 Three prototype bridges were tested with the same method. Design A held 240 g, design B held 140 g and design C held 190 g. Which design was the strongest? (a) design C (b) design A (c) design B
2. 2.True or false: to repeat each test is good testing. (a) False (b) True
3. 3.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 160 g and design C held 260 g. Which design was the weakest? (a) design A (b) design C (c) design B
4. 4.True or false: to test it only once is poor testing. (a) False (b) True
5. 5.🧪 Three prototype bridges were tested with the same method. Design A held 120 g, design B held 220 g and design C held 170 g. Which design was the weakest? (a) design B (b) design C (c) design A
6. 6.🔍 Which is the odd one out? (a) measure the same way (b) use the same load (c) change only one thing (d) guess, do not measure
7. 7.🧪 Is it good or poor testing to use a new load each time? (a) good testing (b) poor testing
8. 8.🔢 To build and test a straw bridge, which comes first: “strengthen the weak part” or “choose and draw one”? (a) strengthen the weak part (b) choose and draw one
9. 9.🔢 To build and test a straw bridge, which is the LAST step? (a) choose and draw one (b) build it with straws (c) strengthen the weak part (d) load it with coins
10. 10.🧪 In a fair test, how many things do you change at a time? (a) none (b) all of them (c) two (d) one
11. 11.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “sketch three ideas”? (a) sketch three ideas (b) read the challenge rules
12. 12.🔍 Which is the odd one out? (a) change lots at once (b) skip writing results (c) hide a failed test (d) repeat each test
13. 13.🧪 A paper bridge was tested three times. It held 260 g, 100 g and 210 g. What is the mean (average) load it held, in grams?
14. 14.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) sketch three ideas (b) load it with coins (c) read the challenge rules (d) strengthen the weak part
15. 15.🧪 The first prototype held 90 g. After the team improved it, the new prototype held 240 g. How many more grams did it hold?
16. 16.🧪 Is it good or poor testing to use the same load? (a) good testing (b) poor testing
17. 17.🧪 The first prototype held 300 g. After the team improved it, the new prototype held 470 g. How many more grams did it hold?
18. 18.🧪 A paper bridge was tested three times. It held 280 g, 140 g and 270 g. What is the mean (average) load it held, in grams?
19. 19.True or false: to measure the same way is good testing. (a) False (b) True
20. 20.True or false: to use the same load is good testing. (a) False (b) True
21. 21.🧪 A paper bridge was tested three times. It held 260 g, 250 g and 270 g. What is the mean (average) load it held, in grams?
22. 22.🧪 Three prototype bridges were tested with the same method. Design A held 140 g, design B held 240 g and design C held 190 g. Which design was the strongest? (a) design C (b) design A (c) design B
23. 23.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to decorate a room (c) to test ideas cheaply (d) to sell them at once
24. 24.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
25. 25.🧪 A paper bridge was tested three times. It held 270 g, 90 g and 150 g. What is the mean (average) load it held, in grams?
26. 26.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
27. 27.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “read the challenge rules”? (a) read the challenge rules (b) build it with straws
28. 28.🔢 To build and test a straw bridge, which is the FIRST step? (a) read the challenge rules (b) strengthen the weak part (c) choose and draw one (d) load it with coins
29. 29.🔍 Which is the odd one out? (a) test it only once (b) guess, do not measure (c) record every result (d) hide a failed test
30. 30.True or false: to use a new load each time is poor testing. (a) False (b) True
31. 31.🧪 The first prototype held 180 g. After the team improved it, the new prototype held 310 g. How many more grams did it hold?
32. 32.True or false: to measure the same way is poor testing. (a) False (b) True
33. 33.🧪 A paper bridge was tested three times. It held 240 g, 150 g and 150 g. What is the mean (average) load it held, in grams?
34. 34.🧪 Three prototype bridges were tested with the same method. Design A held 170 g, design B held 220 g and design C held 270 g. Which design was the strongest? (a) design B (b) design C (c) design A
35. 35.🔍 Which is the odd one out? (a) change only one thing (b) guess, do not measure (c) test it only once (d) skip writing results
36. 36.🧪 Three prototype bridges were tested with the same method. Design A held 190 g, design B held 240 g and design C held 140 g. Which design was the weakest? (a) design A (b) design C (c) design B
37. 37.🔢 To build and test a straw bridge, which comes first: “build it with straws” or “sketch three ideas”? (a) sketch three ideas (b) build it with straws
38. 38.🔍 Which is the odd one out? (a) measure the same way (b) repeat each test (c) hide a failed test (d) record every result
39. 39.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 270 g. How many more grams did it hold?
40. 40.True or false: to change only one thing is poor testing. (a) False (b) True

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